At least in Germany to charge someone with a felony it requires a premeditation. As I only intent to spread the blockchain in order to transmit BTC there is no crime. Dunno what western countries he is talking about but it is more or less like jailing the house owner after someone painted something illegal onto his frontage. I hope this is impossible in other countries as well. Furthermore the thread owner already made a confession to own and spread illegal content. If he's tellling the truth (and I really doubt it) I hope he is not that dumb to tell the police as it is more likely that they detain him.